The Candian model is actually very good, and just as free and available as GFS. It outranked GFS in accuracy, at least in the last article I read. I'd love to find a better source of accuracy-ranking for NWP models if anyone knows of one. Also, the UK Met Office have now started putting the output of their Unified Model on AWS. The UM ranks just behind ECMWF, it's a great model. The data on AWS is 24 hours behind, but this shows their progress in data dissemination. Not sure what costs would be involved but check out this as an FYI: